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php3-list | 199807

Re: [PHP3] Credit Card From: Stunt Pope (markjr <email protected>)
Date: 07/29/98

On 29-Jul-98 Pablo A. Godel wrote:
> Guoneng Zhong wrote:
>
>> Hi,
>> Would anyone know the credit card verification algorithm or where it can
>> be found? I am writing part of a shopping cart and I want to make sure
>> the credit card number is at least valid. Thanks!
>
> Do this algorithms work well ?? I would like to use one of this, but I'm
> affraid to
> not accept valid CC numbers because some bad thing in them...
>
>

The standard check is the MOD-10 check, which many systems check before
even running the card number itself. I don't have the algorithm handy, but
at least you have the name of it now. (For searching purposes)

-mark 

---
Mark Jeftovic                   aka: mark jeff or vic, stunt pope. 
markjr <email protected>              http://www.shmOOze.net/~markjr
Private World's BOFH            http://www.PrivateWorld.com
irc: L-bOMb                     Keep `em Guessing

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